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EP0823622A3 - Apparatus and method for detecting misfires in internal combustion engine - Google Patents

Apparatus and method for detecting misfires in internal combustion engine Download PDF

Info

Publication number
EP0823622A3
EP0823622A3 EP97113780A EP97113780A EP0823622A3 EP 0823622 A3 EP0823622 A3 EP 0823622A3 EP 97113780 A EP97113780 A EP 97113780A EP 97113780 A EP97113780 A EP 97113780A EP 0823622 A3 EP0823622 A3 EP 0823622A3
Authority
EP
European Patent Office
Prior art keywords
engine
ecu
detecting
learning value
crankshaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97113780A
Other languages
German (de)
French (fr)
Other versions
EP0823622A2 (en
EP0823622B1 (en
Inventor
Susumu Shinohara
Tomohiro Fujita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of EP0823622A2 publication Critical patent/EP0823622A2/en
Publication of EP0823622A3 publication Critical patent/EP0823622A3/en
Application granted granted Critical
Publication of EP0823622B1 publication Critical patent/EP0823622B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/11—Testing internal-combustion engines by detecting misfire

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Testing Of Engines (AREA)

Abstract

An apparatus for detecting misfires in an internal combustion engine (1) that is mounted on a vehicle. A plurality of cylinders is defined in the engine (1), and a piston accommodated in each cylinder to reciprocate in the cylinder. A crankshaft (13) is connected with the piston, the crankshaft (13) is rotated by the reciprocal movement of the piston. An engine speed sensor (25) is provided for detecting the rotating speed of the crankshaft (13). An electronic conrrol unit (ECU) (30) computes the deviation of rotating speed of the crankshaft (13) corresponding to each cylinder based on the detected engine speed, and the deviation is proportional to the engine (1) load. The ECU (30) sets a leaning value based on the computed deviation, wherein the learning value is used for detecting the misfires in the engine (1). A memory (33) is provided for storing the learning value. Several sensors are provided for detecting a running condition of the engine (1), wherein the condition is included the engine (1) load. The ECU (30) renews the learning value stored in the memory (33) based on the detected condition of the engine (1). The ECU (30) determines whether the misfires occurs in each cylinder based on the difference between the deviation and the learning value. The ECU (30) renews the learning value when the engine (1) load is less than a predetermined value.
EP97113780A 1996-08-09 1997-08-08 Apparatus and method for detecting misfires in internal combustion engine Expired - Lifetime EP0823622B1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP211620/96 1996-08-09
JP21162096 1996-08-09
JP21162096 1996-08-09
JP139743/97 1997-05-29
JP13974397A JP3449170B2 (en) 1996-08-09 1997-05-29 Misfire detection device for internal combustion engine
JP13974397 1997-05-29

Publications (3)

Publication Number Publication Date
EP0823622A2 EP0823622A2 (en) 1998-02-11
EP0823622A3 true EP0823622A3 (en) 1998-08-19
EP0823622B1 EP0823622B1 (en) 2003-12-10

Family

ID=26472439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97113780A Expired - Lifetime EP0823622B1 (en) 1996-08-09 1997-08-08 Apparatus and method for detecting misfires in internal combustion engine

Country Status (4)

Country Link
US (1) US5951617A (en)
EP (1) EP0823622B1 (en)
JP (1) JP3449170B2 (en)
DE (1) DE69726656T2 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19825990A1 (en) * 1998-06-10 1999-12-16 Fev Motorentech Gmbh Method for detecting misfires on a piston internal combustion engine with electromagnetically actuated gas exchange valves
DE10115133B4 (en) * 2000-04-20 2008-09-11 Fev Motorentechnik Gmbh Method for damping rotational uniformities of multi-cylinder reciprocating internal combustion engines in I-cycle method
US6935313B2 (en) * 2002-05-15 2005-08-30 Caterpillar Inc System and method for diagnosing and calibrating internal combustion engines
JP3818218B2 (en) * 2002-05-22 2006-09-06 トヨタ自動車株式会社 Electronic control device for vehicle
JP4120276B2 (en) * 2002-05-31 2008-07-16 トヨタ自動車株式会社 Misfire detection device for internal combustion engine
DE10254479B4 (en) 2002-11-21 2004-10-28 Siemens Ag Method for detecting misfires in an internal combustion engine
US20080161305A1 (en) * 2005-04-06 2008-07-03 Exelixis, Inc. C-Met Modulators and Methods of Use
JP4484772B2 (en) * 2005-06-23 2010-06-16 日立オートモティブシステムズ株式会社 Misfire detection device for internal combustion engine
KR100736543B1 (en) * 2006-10-31 2007-07-06 지멘스 오토모티브 주식회사 Method for diagnosising error detction and healing in vehicle tank system
US20090088956A1 (en) * 2007-09-27 2009-04-02 Caterpillar Inc. Robust onboard diagnostic misfire detection
US7950273B2 (en) * 2007-11-09 2011-05-31 GM Global Technology Operations LLC Engine misfire and rough road detection systems and methods
JP2009191709A (en) * 2008-02-14 2009-08-27 Honda Motor Co Ltd Misfire detecting device of internal combustion engine
KR20090126619A (en) * 2008-06-04 2009-12-09 현대자동차주식회사 System for diagnosis a cylinder de-activation actuator of vehicle and method thereof
DE102010001534B4 (en) * 2009-02-17 2022-03-24 Robert Bosch Gmbh Method for determining at least one misfiring cylinder of an internal combustion engine, control unit and motor vehicle drive train
KR101558789B1 (en) * 2014-07-07 2015-10-07 현대자동차주식회사 Engine RPM Monitoring Method using Mode of Priority and Engine RPM Monitoring Controller thereof
JP2017214857A (en) 2016-05-31 2017-12-07 ヤマハ発動機株式会社 Accidental fire detection device and vehicle
JP7111478B2 (en) * 2018-02-28 2022-08-02 日立Astemo株式会社 Internal combustion engine misfire detector
JP6624325B1 (en) 2019-03-29 2019-12-25 トヨタ自動車株式会社 Misfire detection device for internal combustion engine, misfire detection system for internal combustion engine, data analysis device, control device for internal combustion engine, misfire detection method for internal combustion engine, and reception execution device
JP6624326B1 (en) 2019-03-29 2019-12-25 トヨタ自動車株式会社 Misfire detection device for internal combustion engine, misfire detection system for internal combustion engine, data analysis device, control device for internal combustion engine, misfire detection method for internal combustion engine, and reception execution device
JP6624324B1 (en) 2019-03-29 2019-12-25 トヨタ自動車株式会社 Misfire detection device for internal combustion engine, misfire detection system for internal combustion engine, data analysis device, control device for internal combustion engine, misfire detection method for internal combustion engine, and reception execution device
JP7302466B2 (en) * 2019-12-23 2023-07-04 トヨタ自動車株式会社 Device for Deterioration Determination of Internal Combustion Engine for Vehicle
JP7420053B2 (en) * 2020-11-09 2024-01-23 トヨタ自動車株式会社 Internal combustion engine misfire detection device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5307670A (en) * 1990-11-01 1994-05-03 Fuji Jukogyo Kabushiki Kaisha Misfire discriminating method for an engine
US5528929A (en) * 1994-03-18 1996-06-25 Mitsubishi Denki Kabushiki Kaisha Misfire detecting apparatus for internal combustion engine with manufacturing error compensation
US5528931A (en) * 1995-04-05 1996-06-25 Ford Motor Company Engine diagnostic monitor with on-board adjustment of correction factors

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2926917B2 (en) * 1990-07-06 1999-07-28 日産自動車株式会社 Vehicle abnormality diagnosis device
JPH04265475A (en) * 1991-02-20 1992-09-21 Fuji Heavy Ind Ltd Mis-fire judgment for respective cylinders of engine
US5307671A (en) * 1991-03-04 1994-05-03 Mitsubishi Denki Kabushiki Kaisha Method for detecting misfires in gasoline internal combustion engine
JP3479090B2 (en) * 1992-06-03 2003-12-15 株式会社日立製作所 Multi-cylinder engine combustion condition diagnostic device
JP3120268B2 (en) * 1995-03-22 2000-12-25 株式会社ユニシアジェックス Misfire diagnosis device for multi-cylinder internal combustion engine
JP3264145B2 (en) * 1995-07-13 2002-03-11 日産自動車株式会社 Misfire diagnosis device for multi-cylinder internal combustion engine
US5809969A (en) * 1997-07-29 1998-09-22 Chrysler Corporation Method for processing crankshaft speed fluctuations for control applications

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5307670A (en) * 1990-11-01 1994-05-03 Fuji Jukogyo Kabushiki Kaisha Misfire discriminating method for an engine
US5528929A (en) * 1994-03-18 1996-06-25 Mitsubishi Denki Kabushiki Kaisha Misfire detecting apparatus for internal combustion engine with manufacturing error compensation
US5528931A (en) * 1995-04-05 1996-06-25 Ford Motor Company Engine diagnostic monitor with on-board adjustment of correction factors

Also Published As

Publication number Publication date
DE69726656T2 (en) 2004-08-19
JP3449170B2 (en) 2003-09-22
US5951617A (en) 1999-09-14
DE69726656D1 (en) 2004-01-22
EP0823622A2 (en) 1998-02-11
EP0823622B1 (en) 2003-12-10
JPH10110649A (en) 1998-04-28

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